kboot: Implement host_ioctl

Sponsored by:		Netflix

stand/kboot/arch/aarch64/syscall_nr.h

@@ -5,6 +5,7 @@
 #define SYS_getdents64		 61
 #define	SYS_getpid		172
 #define SYS_gettimeofday	169
+#define SYS_ioctl		 29
 #define SYS_lseek		 62
 #define SYS_kexec_load		104
 #define	SYS_mkdirat		 34

stand/kboot/arch/amd64/syscall_nr.h

@@ -4,6 +4,7 @@
 #define SYS_getdents64		217
 #define	SYS_getpid		 39
 #define SYS_gettimeofday	 96
+#define SYS_ioctl		 16
 #define SYS_kexec_load		246
 #define SYS_lseek		  8
 #define	SYS_mkdirat		258

stand/kboot/arch/powerpc64/syscall_nr.h

@@ -5,6 +5,7 @@
 #define SYS_getdents64		202
 #define	SYS_getpid		 20
 #define SYS_gettimeofday	 78
+#define SYS_ioctl		 54
 #define SYS_kexec_load		268
 #define SYS_llseek		140
 #define	SYS_mkdirat		287

stand/kboot/host_syscall.h

@@ -160,6 +160,7 @@ int host_fstat(int fd, struct host_kstat *sb);
 int host_getdents64(int fd, void *dirp, int count);
 int host_getpid(void);
 int host_gettimeofday(struct host_timeval *a, void *b);
+int host_ioctl(int fd, unsigned long request, unsigned long arg);
 int host_kexec_load(unsigned long entry, unsigned long nsegs, struct host_kexec_segment *segs, unsigned long flags);
 ssize_t host_llseek(int fd, int32_t offset_high, int32_t offset_lo, uint64_t *result, int whence);
 int host_mkdir(const char *, host_mode_t);

stand/kboot/host_syscalls.c

@@ -54,6 +54,12 @@ host_gettimeofday(struct host_timeval *a, void *b)
 	return host_syscall(SYS_gettimeofday, (uintptr_t)a, (uintptr_t)b);
 }
 
+int
+host_ioctl(int fd, unsigned long request, unsigned long arg)
+{
+	return host_syscall(SYS_ioctl, fd, request, arg);
+}
+
 int
 host_kexec_load(unsigned long entry, unsigned long nsegs, struct host_kexec_segment *segs, unsigned long flags)
 {